CVE-2020-9853

7.8 highEPSS 0.8%

High (7.8) in apple mac os x. EPSS 0.8% chance of exploitation in the next 30 days.

A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Catalina 10.15.4. A malicious application may be able to determine kernel memory layout.

Severity

CVSS 3.1

7.8 high

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
CWEs: CWE-20, CWE-787
Published: 2020-10-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

apple:mac_os_x

References

https://support.apple.com/kb/HT211100
https://support.apple.com/kb/HT211100

Check your stack JSON